Pro tip: You can skip to the next race by pressing "Page Up".
This can be helpful if you are struggling with the later laps. (I didn't require so many laps during development to save time while testing, but the incremental speed ups from each lap can really add up!) You can still win with some careful planning, but it is trickier than intended. Also note that your speed only changes in the first 2 races, so 3 and 4 don't have this problem.